EP4261990A1 - Accumulateur d'énergie - Google Patents

Accumulateur d'énergie Download PDF

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Publication number
EP4261990A1
EP4261990A1 EP23157394.0A EP23157394A EP4261990A1 EP 4261990 A1 EP4261990 A1 EP 4261990A1 EP 23157394 A EP23157394 A EP 23157394A EP 4261990 A1 EP4261990 A1 EP 4261990A1
Authority
EP
European Patent Office
Prior art keywords
energy storage
rack
storage module
racks
modules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23157394.0A
Other languages
German (de)
English (en)
Inventor
Torsten Peppel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
M&p Motion Control And Power Electronics GmbH
Original Assignee
M&p Motion Control And Power Electronics GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by M&p Motion Control And Power Electronics GmbH filed Critical M&p Motion Control And Power Electronics GmbH
Publication of EP4261990A1 publication Critical patent/EP4261990A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/26—Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/512—Connection only in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit

Definitions

  • the invention relates to an energy storage device in the medium-voltage range, based on capacitors, preferably double-layer capacitors, or on rechargeable batteries.
  • energy storage modules are connected in series in at least one strand, with each energy storage module comprising a number of series-connected energy storage cells, for example in the form of individual cells, which can be, for example, double-layer capacitors or lithium-ion batteries.
  • the cell voltage is, for example, 2.5V to 3V.
  • the energy storage modules can be arranged or interconnected in series to form at least one strand or, for example, in at least one rack to form at least one strand. Likewise, several racks can be combined or connected in series to form at least one strand.
  • a parallel combination of strands or racks is also provided.
  • an energy storage device includes, as the smallest unit or storage unit, at least one energy storage module and/or at least one rack with at least one energy storage module.
  • Several energy storage modules can be combined into a monitoring unit, for example a rack.
  • a rack can be a physical unit, such as a cabinet.
  • the energy storage modules can also be coupled or combined without a rack.
  • the monitoring system includes different monitoring components. There is a module monitoring unit for each energy storage module.
  • the module monitoring unit monitors each individual energy storage cell or groups of or a plurality of energy storage cells of the energy storage module at least with regard to the voltage and the temperature of at least the energy storage module.
  • a group of energy storage cells can also include all energy storage cells of an energy storage module.
  • Error situations can occur, for example, if a cell becomes high-resistance and the current flow through the string is interrupted. It cannot be loaded or unloaded. If an attempt is made to discharge the energy storage, only the potentials of the two separate storage parts shift; If the voltage difference across the separation point is too high, breakdown occurs. A conductive channel can then form, but it would also be possible for the capacitor to open. The memory needs to be shut down in such a situation. As described, the potentials at the separation point shift because the partial potentials are not discharged, but the total voltage becomes lower due to the discharging. Breakthroughs occur continuously at the fault location during unloading or a conductive channel is formed. The energy of the entire strand must flow through the fault location. This increases the risk of fire.
  • the object of the invention is therefore to create an energy storage device with increased availability and a workaround for faulty components of the energy storage system.
  • the invention achieves that an energy storage device is created, wherein the energy storage device comprises at least one energy storage module with energy storage cells connected in series, wherein the at least one energy storage module can be arranged in a rack.
  • One, two or more energy storage modules can at least form a rack.
  • At least two or more of the energy storage modules are connected in series in a rack or as a rack, with at least two racks forming a strand and at least one of the energy storage modules of a first rack being connected in parallel to at least one of the energy storage modules of at least a second rack or further racks.
  • Two or more racks can advantageously be connected or combined in series and/or parallel to form a strand. At least two strands can also be connected in parallel.
  • An advantage of the invention lies in the reliable operation of the energy storage device and its racks in the string.
  • the energy storage modules housed in a rack can be viewed as a plurality of energy storage modules or can be combined into one energy storage module.
  • Additional energy storage modules can also be affected in a time-delayed and/or rack-offset manner, without the overall function being jeopardized or without the energy storage having to be switched off.
  • Availability is increased because failures of an energy storage module are absorbed or balanced by the energy storage modules connected in parallel.
  • a faulty energy storage module does not need to be switched off immediately.
  • it can continue to be operated with possibly no longer optimal use.
  • the strand can continue to be used even if the sub-strand is faulty, i.e. the serial connection or connection between racks that follow each other in series, or if there is a faulty rack or a faulty energy storage module group. Only the storage capacity of an energy storage module group is lost or reduced.
  • Charge balancing between the energy storage modules is also advantageously achieved, so that different charge states of an energy storage module are also intercepted or balanced by the energy storage modules connected in parallel.
  • At least one of the energy storage modules in a rack forms an energy storage module group or two or more energy storage modules in a rack can be combined or assigned into one, two or more energy storage module groups per rack.
  • at least one of the energy storage module groups of the first rack is connected in parallel to at least one of the energy storage module groups of the at least second or further rack. This advantageously reduces the amount of wiring required in the rack and between the racks.
  • a large number of energy storage modules in an energy storage module group compensate for tolerances and thus reduce the susceptibility to errors.
  • targeted overvoltage protection can be provided for individual or combined energy storage modules.
  • they are Energy storage module groups are each the same size.
  • energy storage module groups within a rack each with a different number of energy storage modules, are also possible.
  • the energy storage modules can be subdivided or divided into further energy storage module groups, so that the energy storage modules can also be divided or assigned into three, four or more energy storage module groups per rack.
  • an energy storage module can already form an energy storage module group
  • the energy storage modules in the respective rack are combined into two energy storage module groups as rack halves, with a first of the two energy storage module groups or a first rack half of the respective racks and a second of the two energy storage module groups or second rack half of the respective racks being connected in parallel across racks.
  • the energy storage module groups can be formed half per rack, so that the energy storage modules in a rack, for example, the first energy storage module group is divided or assigned in the upper part and the second energy storage module group in the lower part of the rack.
  • the energy storage module groups of the rack halves are preferably the same size.
  • the energy storage modules or the energy storage module groups of the first rack are connected or connected in parallel via at least one cross connection to the energy storage modules or energy storage module groups of the at least second or further rack in order to reduce the circuitry effort.
  • the at least one cross connection is advantageously arranged outside the respective rack and/or the at least one cross connection outside the respective rack is connected to at least one sub-strand between at least two serially connected racks.
  • the racks can be configured in a standardized manner and easily combined without having to laboriously adapt the internal cabling. Replacing a rack in the line would also be easier.
  • Fig. 1 a schematic representation of an energy storage device with racks connected in series, each of which forms sub-strands, which together form a strand, with two energy storage module groups being present per rack and the energy storage module groups of a rack level or rack half being connected in parallel across racks or across sub-strands.
  • Energy storage is shown with the parallel connection of the energy storage modules 1 or energy storage module groups 4 according to the invention, whereby in the respective concrete examples the racks 2 are initially connected in series and form three parallel sub-strands 5, which together form a common strand 3.
  • the three parallel sub-strands 5 can also be combined into a common sub-strand 5 in the area between the racks 2 that follow each other in series and are connected in parallel (not shown).
  • the cross connection 7 and the lower strand 5 are a connection. This is the case, for example, at the respective transition to strand 3, in which Figure 1 given at the top and bottom of the supply lines from strand 3 to racks 2.
  • the parallel connection of the energy storage modules 1 or energy storage module groups 4 of the racks 2 arranged in parallel in parallel sub-strings 5 allows the operation of the energy storage to be maintained and the energy to be supplied via the combined parallel and serial connection the energy storage modules 1 and energy storage module groups 4 to the appropriate extent on the separation 8 or Defect 8 is passed or compensated for with the remaining energy storage modules 1 and energy storage module groups 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
EP23157394.0A 2022-02-18 2023-02-17 Accumulateur d'énergie Pending EP4261990A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102022103959 2022-02-18
DE102022118757 2022-07-26
DE102022123384.7A DE102022123384A1 (de) 2022-02-18 2022-09-13 Energiespeicher

Publications (1)

Publication Number Publication Date
EP4261990A1 true EP4261990A1 (fr) 2023-10-18

Family

ID=87518510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23157394.0A Pending EP4261990A1 (fr) 2022-02-18 2023-02-17 Accumulateur d'énergie

Country Status (2)

Country Link
EP (1) EP4261990A1 (fr)
DE (1) DE102022123384A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3002599A1 (fr) * 2013-11-29 2016-04-06 LG Chem, Ltd. Procédé de correction d'un capteur de tension incorporé dans un bâti de batterie
US9350168B2 (en) * 2011-05-31 2016-05-24 Lg Chem, Ltd. Voltage equalization apparatus for connecting power storage unit racks and power storage system including the same
EP3863144A1 (fr) * 2020-02-10 2021-08-11 Samsung SDI Co., Ltd. Système de protection de système de stockage d'énergie
EP3952053A1 (fr) * 2020-08-07 2022-02-09 Robert Bosch GmbH Procédé de fonctionnement d'un système de batterie
EP3982508A1 (fr) * 2020-10-09 2022-04-13 The Boeing Company Architecture de déconnexion et de protection de batterie intelligente pour bloc-batterie modulaire haute puissance multi-chaîne aéroportée
WO2022165028A1 (fr) * 2021-01-28 2022-08-04 American Battery Solutions, Inc. Système de stockage d'énergie en réseau doté de nombreuses cellules connectées en parallèle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9350168B2 (en) * 2011-05-31 2016-05-24 Lg Chem, Ltd. Voltage equalization apparatus for connecting power storage unit racks and power storage system including the same
EP3002599A1 (fr) * 2013-11-29 2016-04-06 LG Chem, Ltd. Procédé de correction d'un capteur de tension incorporé dans un bâti de batterie
EP3863144A1 (fr) * 2020-02-10 2021-08-11 Samsung SDI Co., Ltd. Système de protection de système de stockage d'énergie
EP3952053A1 (fr) * 2020-08-07 2022-02-09 Robert Bosch GmbH Procédé de fonctionnement d'un système de batterie
EP3982508A1 (fr) * 2020-10-09 2022-04-13 The Boeing Company Architecture de déconnexion et de protection de batterie intelligente pour bloc-batterie modulaire haute puissance multi-chaîne aéroportée
WO2022165028A1 (fr) * 2021-01-28 2022-08-04 American Battery Solutions, Inc. Système de stockage d'énergie en réseau doté de nombreuses cellules connectées en parallèle

Also Published As

Publication number Publication date
DE102022123384A1 (de) 2023-08-24

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